What are they using as conductors? 1MW is 1202A @ 480V three-phase, 288.6A @ 2kV three-phase, and 115.4A @ 5kV three-phase.
That’s a lot of power, at 480V you’d need (4) parallel sets of #350MCM. #350s weigh just over 1lb/ft.
Some kind of articulating busbar with some sort of specialized connector, perhaps?